1. Introduction
According to an article in Quanta Magazine [
2] Wood writes, "No known mathematical procedure can meaningfully average an infinite number of objects covering an infinite expanse of space in general. The path integral is more of a physics philosophy than an exact mathematical recipe." Note the quote can be illustrated by an explicit, Borel measurable, bijective function
, where the graph of the
f is dense in
. Further note, a meaningful average for the function should be finite for the sake of application. The cited paper [
3] presents a constructive approach to such a function using filters over families of finite set; however, the average in the approach is not unique. The method of the paper determines the average value for functions with a range that lies in any algebraic structure for which the finite averages make sense. In this paper, we will explore a more constructive approach where the average is unique, finite, and "meaningful" (
&
) for such functions and also for "a sizable portion" of all functions in (i.e., a non-shy subset of [
4]) the set of all Borel measurable functions. The reason we want this is to increase the chances of obtaining a finite average from an explicit, Borel measurable, and bijective function
, where the graph of
f is dense in
. The rest is explained in the next paragraph. (Note, the functions must be Borel measurable for application purposes).
Suppose for
, set
and the function
. If
A is Borel, note the expected value of
f, w.r.t the
d-dimensional Hausdorff measure (i.e.,
d is the
Hausdorff dimension of
A), is undefined when the
Hausdorff-dimension (of
A)-dimensional
Hausdorff measure (of also
A) is either
, zero or the function
f is unbounded (def. 4,5 & 6). Infact, if
is the set of all Borel measurable functions in
(for all the sets
—i.e, def. 7) and
is the set of all
with a finite expected value, then
is a shy subset of
. This means "almost no" Borel measurable functions have a finite expected value. Specifically, within the definition of
—we want to manipulate the expected value of
f to be finite—such that
is a non-shy (i.e.,
prevelant or
neither prevelant nor shy[
4]) subset of
.
This can be done by taking the expected value of a sequence of bounded functions which converge to bounded/unbounded f. A sequence of bounded functions is chosen using a "choice function", where criteria are added to determine the choice function. Note, we want the expected value from the chosen sequence of bounded functions to be unique and "natural" extension of the original expected value w.r.t Hausdorff measure on bounded f, taking finite values only.
We do this by defining a sequence of sets called ★-sequence of sets (def. 8), where the ★-sequences of sets converge to the graph of f rather than A. If not, the generalized expected value of f w.r.t to a ★-sequence (def. 9) cannot be finite for a non-shy subset of Borel measurable functions. Moreover, since there are graphs of functions with multiple ★-sequences of sets, s.t.the generalized expected values of f w.r.t each ★-sequence are different and non-unique (depending on the starred-sequence chosen)—we must have a choice function which chooses a unique set of equivalent ★-sequences with the same, unique expected value.
Therefore, when defining the choice function, we ask a question in
3.4 where with previous sections; we define equivalent & non-equivalent
★-sequences of sets for
3.1, and "natural" extensions of expected values for
3.3. We attempt to answer the question in
3.4 by redefining linear/super-linear convergence (def. 16) in terms of entropy, samples and "pathways" where the samples are derived by taking a point from each partition of a
★-sequence of sets, such the partitions have equal Hausdorff measure—§4. Since all samples have finite points; we take a "pathway" of line segments between the nearest point to each start-point of all segments in the pathway (i.e., the pathway should intersect every point once), where in def. 19 we
exclude segments with lengths which are outliers [
5]. The procedure is similar to the ones used in computers to graph functions [
6]. We also take the length of each of the line segments in the "pathway", multiplying all lengths by a constant so they add up to one (i.e. a discrete probability distribution). We take the supremum of the Entropy of the distribution [
7] w.r.t all "pathways" to redefine def. 16 as def. 20, where the redefined definition is used to create a choice function in
5.1.
2. Preliminary Definitons/Motivation
Other than integration with filters [
3], there are few other constructive approaches to finding a unique and "natural" extension of the average that takes a finite value for additional functions. Before beginning, consider the following mathematical definitions:
2.1. Preliminary Definitions
Let X be a completely metrizable topological vector space.
Definition 1 (Prevalent Subset of X). A Borel set is said to beprevalentif there exists a Borel measure μ on X such that:
for some compact subset C of X, and
the set has full μ-measure (that is, the complement of has measure zero) for all .
More generally, a subset F of X is prevalent if F contains a prevalent Borel Set. Also note:
Definition 2 (Shy Subset of X). The complement of a prevalent set is called a shy set.
such that we define:
Definition 3 (Non-Shy Subset of X). A subset of X that is prevalent or neither prevalent nor shy.
Furthermore, suppose we define:
Definition 4 (Hausdorff Measure).
Let be a metric space, . For every , define the diameter of C as:
The Hausdorff Outer Measure is defined by
If and such that , where the Euler’s Gamma function is Γ and constant is:
when and E is a Borel set we have that
such that is related to the α-dimensional Lebesgue Measure.
Definition 5 (Hausdorff Dimension).
The Hausdorff Dimension of E is defined by where:
Therefore, we can use definitions 1, 2, 4 to prove or disprove:
Theorem 1. The set of Borel measurable, unbounded functions forms a prevalent subset of the set of all Borel measurable functions.
Note 1 (Notes on Theorem 1).
By measurable function, we mean the pre-image of any subset of (under a measurable function) is in the Borel sigma algebra. (Note function f on set A is unbounded when there is no such that for all ):
however, we’re unsure if theorem 1 is correct. Despite this, we could prove or disprove theorem 1 using the paper on prevalence in [4].
If the theorem is true, it is easier to show a shy subset of Borel measurable, unbounded function have finite expected values (see the next definition). Hence, a shy subset of all Borel measurable function, including bounded Borel functions, have finite expected values.
We, therefore, define the expected value w.r.t the Hausdorff measure to be the following:
Definition 6 (Expected Value of
f).
If , where set , the expected value of function (using def. 4 and 5) is
where we can see there are cases where is undefined or infinite (e.g. is zero, or f is unbounded). In this case, if topological vector space X is (see 2.1) where we define such that:
Definition 7 (The set of all measurable functions).
is the set of all Borel measurable functions in for all the sets . This can also be described as:
Thus, we must prove:
Theorem 2. If set is the set of all (def. 7) with a finite , then is a shy subset of .
Note 2 (Note on Theorem 2).
We’re not sure how to prove theorem 2; however, we refer to an answer from @Mathe at the last page of this citation [8],
"We can follow the argument presented in example 3.6 of [4]:
Because a function can always be represented as we only consider whether positive functions have a mean value. We consider the case of a set A with finite positive measure. In this context having a mean means having a finite integral, and not being integrable means having an infinite integral.
Take (measurable functions over A) let P denote the one-dimensional subspace of consisting of constant functions (assuming the Hausdorff measure on A) and let (measurable functions over A with no finite integral)
If denotes the Lebesgue measure over P, for any fixed
Meaning P is a 1-dimensional probe of F, so F is a 1-prevalent set. (In other terms, the set of measurable functions over A with no finite integral or mean, forms a prevalent subset of the set of all measurable functions in . Therefore, using def. 2, the set of measurable functions with a finite integral or mean forms a shy subset of all Borel measurable functions in .)
2.2. Extended Expected Values
Here are four ways to extend (def. 4 & 5) in (def. 6), so when f is bounded, if is the set of all where extended expected values are finite, then set (i.e., thm. 2):
2.3. Examples
If , set and function , we want to apply the definitions of the next section for the following examples:
- (1)
-
The most important example is any explicit, bijective
where the graph of
f is dense in
. (This is a nice example of "infinite number of objects covering an infinite expanse of space" described by Wood [
2].) Note
is undefined, since the Hausdorff/Lebesgue measure of the graph of
f in each hyperrectangle (i.e., the
n-dimensional analogue of a rectangle) of
is zero [
12]. In other words, using
is undefined because of division by zero (i.e, ).
Further, we assume using
2.2, crit. 1, there is no (exact) dimension function of
A where
is positive & finite, since
A is unbounded. Furthermore, the graph of
f might be "too chaotic" for extensions of the Lebesgue Density Theorem [
9], the Hausdorff measure using Hyperbolic Cantor Sets [
10], or the Henstock-Kurzweil integral on the Metric Space [
11].
- (2)
-
A simpler, more explicit example is
, gcd is the greatest common divisor, and
where:
For instance, point is a point in the graph of f (since and , making ). Also, point is a point in the graph of f (since and , making ); however, point is not in the graph of f (since ).
Note the function in eq.
5 is bounded; however, the expected value & extensions are undefined. (Using def. 6, we know
but
, which makes
:
undefined by division of
.) Further, we assume using
2.2, crit. 1, there is no (exact) dimension function of
A where
is finite. Worse,
A isn’t "fractal" enough for extensions of the Lebesgue Density Theorem [
9], the Hausdorff measure using Hyperbolic Cantor Sets [
10], or the Henstock-Kurzweil integral on the Metric Space [
11].
- (3)
An extremely simple example is
and
. This function is unbounded and has an undefined expected value, even with the improper Riemann integral since:
is
(when
,
, and
) or
(when
,
, and
), making the expected value undefined.
3. Attempt to Answer Thesis
Suppose for , set and function . Moreover, is the h-Hausdorff measure (2.2, crit. 1) where h is the dimension function, and is the set of all Borel measurable functions in .
(Note for the definitions below, I prefer the generalized extensions of (def. 6) in , crit. 2 & 3. Unfortunately, I’m unsure how to describe most of these generalized measures. If possible, replace the h-Hausdorff measure with , crit. 2 or crit. 3)
Definition 8 (★-Sequence of Sets). When we define a sequence of sets , where h is the dimension function (2.2, crit. 1), then if:
-
The set theoretic limit of is the graph of f (i.e., convergesto the graph of f) such that
with the graph of f being:
such that the set-theoretic limit of should be:
For all , where is the h-Hausdorff measure (2.2, crit. 1):
we define sequence of functions where such that:
we have is a ★-sequence of setsorstarred-sequence of sets
Example 1.
One ★-sequence of sets of on (2.3, crit. 3) is:
Example 2.
Another example of a ★-sequence of sets of where:
using (2.3, crit. 2) is the following:
Note this leads to a new extension of the expected value where when set (def. 7) is the set of all , there exists at least one starred-sequence of sets (of the graph of f) s.t.the extended expected value of f is finite, is a non-shy subset of .
Definition 9 (Generalized Expected Value).
If is a ★-sequence of sets (def. 8), the generalized expected value of f w.r.t is (when it exists) where:
Example 3. Using example 1, we find that when :
for
and the generalized expected value is:
We can see from example 2.3 crit. 3, the average was once undefined but now we’ve "chosen" a ★-sequence which gives a finite expected value.
3.1. Equivalent and Non-Equivalent ★-Sequences of Sets
Suppose we define the following:
Definition 10 (Set ). Set is the set of all f, where the generalized expected value—w.r.t at least one starred sequence—exists.
The following are definitions of equivelant and non-equivelant starred-sequences of sets:
Definition 11 (Non-Equivalent Starred-Sequences of Sets).
All starred-sequences of sets (in a set of ★-sequences of sets) are non-equivalent, if there exists an (def. 10), where the generalized expected values of f (def. 9) w.r.t each starred-sequence of sets has two or more different values (e.g., defined and undefined values are different). See Figure 1.
Definition 12 (Equivalent Starred-Sequences of Sets).
All starred-sequences of sets (in the set of ★-sequences of sets) are equivalent, if we get for all (def. 10); the generalized expected value of f (def. 9) w.r.t each starred-sequence of sets has the same value. See Figure 2.
However, proving that two or more starred-sequences of sets are non-equivalent or equivalent (using def. 12 or 11) is tedious, since we constantly compute def. 9. Therefore, we ask the following:
3.1.1. Question 1
Is there are a simpler definition of equivalent and non-equivalent ★-sequences of sets?
3.1.2. Possible Answer
For the sake of brevity, suppose starred-sequences (i.e., def. 8), such that , , and
Definition 13 (Equivalent Starred-Sequences of Sets [Revisited]).
Starred-sequence of sets and are equivalent, if there exists a , where for all , there exists a , where if is the (exact) dimension function (2.2, crit. 1) of and is the -Hausdorff measure:
and also for all , there exists a , where if is the (exact) dimension function of and is the -Hausdorff measure (2.2, crit. 1) then:
Note we denote these equivalent starred-sequence of sets as
Definition 14 (Multiple Equivalent Starred-Sequences of Sets [Revisited]).
All starred-sequences of sets in:
are equivalent, if for all where , and are equivelant (def. 13). We also state the former as:
Theorem 3.
If starred-sequences of sets in:
are equivalent (def. 14), then for all where , the generalized means of f w.r.t the ★-sequences (def. 9) have the same mean value. In other words:
Note this is similar to def. 12.
Definition 15 (Non-Equivalent Starred-Sequences of Sets [Revisited]).
All starred-sequences of sets in
are non-equivalent, if def. 14 is false, meaning for all where , there exists an , where for all there is either a , where if is the (exact) dimension function (2.2, crit. 1) of , and is the -Hausdorff measure:
or for all there exists a , where if is the (exact) dimension function of , and is the -Hausdorff measure (2.2, crit. 1) then:
3.2. Motivation For Sec. Section 3.4
If the set (def. 7) is the set of all where we choose a ★-sequence of sets of the graph of f (def. 8)—where the generalized expected value of f, w.r.t the chosen starred-sequence, is finite—then is a non-shy subset of . However, consider the following problem:
Theorem 4. If set , is the set of all where the generalized expected values of f w.r.t two or more non-equivalent ★-sequences of sets (def. 15) have different values, then is a non-shy subset of (def. 7).
This means "almost all" measurable functions have several generalized expected values depending on the starred-sequence chosen. Therefore, we need to choose a unique ★-sequence of sets where the new extended expected value is an "meaningful" extension of (def. 6).
3.3. Essential Definitions for a "Meaningful" Expected Value
Suppose and are non-equivelant starred-sequences of sets (def. 8 & 15): we have the following is essential for a "natural" extension of the expected value.
Definition 16 (Linear & Super-linear Convergence of a
★-Sequence of Sets To That Of Another
★-Sequence of Sets).
If we define function , where and for any linear , where , is the Big-O notation, and:
where if the following is true:
then converges to the graph of f: i.e.,
at alinearorsuper-linearrate compared to that of .
Now we may combine the previous definitions into a main question with an answer that solves the thesis
1.
3.4. Main Question
Does there exist a choice function that chooses a unique set (of equivalent ★-sequences of sets—def. 14) such that:
- (1)
The chosen starred-sequences of sets converge to at a rate linear or super-linear (def. 16) to the rate non-equivalent ★-sequences of sets (def. 15) converge to
- (2)
The generalized expected value (def. 9) of f w.r.t the chosen (and equivalent) starred-sequences of sets (def. 14) is finite.
- (3)
When set (def. 7) is the set of all such that the choice function chooses a unique set of equivalent ★-sequences of sets satisfying (1) and (2), then Q is a non-shy subset (def. 3) of (i.e., def. 7).
- (4)
Out of all the choice functions which satisfy (1), (2) and (3), we choose the one with the simplest form, meaning for each choice function fully expanded, we take the one with the fewest variables/numbers (excluding those with quantifiers)?
Note 3 (Notes On Question).
Note, the unique set of equivalent and chosen starred-sequences of sets is defined using notation , where is a starred-sequence in . Therefore, after we define the choice function, the answer should be —using def. 9 (when it exists):
Also, consider three things:
- (1)
If the solution to the main question is extraneous, what other criteria can be included to get a unique choice function? (Note if the solution is always extraneous, we want to replace “equivelant starred-sequences of sets” with the following: ”the set of all ★-sequences of sets, where the generalized expected values of f w.r.t each starred-sequence is the same”.)
- (2)
The h-Hausdorff measure (2.2, crit. 1) isn’t the most generalized measure in 2.2. How do we use the other measures in 2.2 to answer the thesis2 of this paper?
- (3)
How do we change the definitions and main question in 3 of this paper to counter Wood’s statement [2] which states, "No known mathematical procedure can meaningfully average an infinite number of objects covering an infinite expanse of space in general" by finding an exact mathematical recipe that does otherwise.
4. Preliminaries To Solve Main Question Of Section 2.4 (In Current Form)
Suppose
h is the dimension function,
is the
h-Hausdorff measure (
2.2, crit. 1), and
is the starred-sequence of sets (def. 8). We will use an alternative approach to definition 16 so we can define a choice function which solves the main question. Read from the second sentence of the last paragraph of the intro of
for a summary. Also, refer to sec. 3 and 4 of [
1] for examples: (the cited paper uses sets instead of the graphs of functions).
While reading, keep in mind the following questions:
- (1)
How do we use mathematica code to illustrate §4 and 5?
- (2)
Is there a more efficient solution to 3.4?
- (3)
If 3.4 should be changed, (see note 3) what else should be 3.4? What is the most efficient solution to the improved version of 3.4?
4.1. Preliminary Definitions
Definition 17 (Uniform coverings of each term of a ★-sequence of sets). We define uniform ε coverings of each term of as a group of pair-wise disjoint sets which cover (for some ), such when taking dimension function h of , we want of each pair-wise disjoint set to have the same value , where and the total sum of of the coverings is minimized. In shorter notation, if
and set Ω is defined as:
then for every , the set of uniform ε coverings is defined using where ω “enumerates" all possible uniform ε coverings of for every .
Definition 18 (Sample of the uniform coverings of each term of a ★-sequence of sets). The sample of uniform ε coverings of each term of is the set of points where for every and , we take a point from each pair-wise disjoint set in the uniform ε coverings of (def. 17). In shorter notation, if
and set is defined as:
then for every , the set of all samples of the set of uniform ε coverings is defined using , such that ψ “enumerates" all possible samples of .
Definition 19 (Entropy on the sample of uniform coverings of each term of ★-sequence of sets). Since there are finitely many points in the sample of the uniform ε coverings of each term of (def. 18), we:
- 1.
-
Take a "pathway" of line segments between all points in each sample (def. 18), such that if we define the following:
- (a)
is the ceiling function
- (b)
is the Euclidean-distance between points and
- (c)
-
The sequence:
contains all points in the "original" sample where we define a "pathway" for which we:
- i.
Choose a point
- ii.
Take a point from (excluding ) with smallest euclidean distance from point . We denote this point where we take . (If more than one point has the smallest Euclidean distance from , we take either point).
- iii.
Take a point in (excluding and ) with smallest euclidean distance from . We denote this point , where we take . (If more than one point has the smallest Euclidean distance from , we take either point).
- iv.
Take a point in (excluding , , and ) with smallest euclidean distance from . We denote this point then take . (If more than one point has the smallest Euclidean distance from , we take either point).
- v.
Repeat the process excluding points etc. until all points in the sample are "denoted". (This should occur times.)
- (d)
-
is a subset of with the largest cardinality, where we take the subset of i-values where has the -th smallest Euclidean distance from (compared to every point in ) such that is not an outlier [5] of
In other words:
- i.
For all , we want to be the largest subset of for which w-values are all i-values satisfying def. 19, criteria 1d.
- (e)
Combining everything in def. 19, crit. 1, we ultimately want all lengths between every point in the "pathway" (def. 18) satisfying def. 19, crit. 1d. We call this:
- 2.
Using def. 19, crit. 1e, normalize into a discrete probability distribution. This is defined as:
- 3.
Take the entropy of def. 19, crit. 2, (for further reading, see [7]). This is defined as:
- 4.
-
Take where is maximized. Call this, where:
with eq. 24 the entropy of the sample of uniform ε coverings of .
Definition 20 (Starred-Sequence of sets converging Sublinearly, Linearly, or Superlinearly to A compared to that of another ★-Sequence).Suppose we define starred-sequences of sets and , where for aconstant greater than zero and variable , we say:
- (a)
-
Using def. 18 and 19, suppose we have:
then (using) we get
- (b)
-
From def. 18 and 19, suppose we have:
then (using) we have:
-
If using and we have that:
we say converges to A at a ratesuperlinearto that of .
-
If using equations and (where we swap in and with ) we have that:
we then say converges to A at a ratesublinearto that of .
-
If using equations , , , and (such for the two latter, we swap
in and with ) we haveboth:
- (a)
or does not equal zero
- (b)
or does not equal zero
and say converges to A at a ratelinearto that of .
5. Attempt to Answer Main Question Of Section 2.4 (In Current Form)
5.1. Choice Function
Suppose we define the following:
- (1)
is a starred-sequence of sets (def. 8) which satisfies (1), (2), and (3) of the main question in 3.4
- (2)
, where
G is the graph of
f; i.e.,
is the set of the starred-sequences of sets that have finite
generalized mean (def. 9).
- (3)
is an element
but
not an element in the set of equivalent starred-sequences of sets (def. 14) of
where using note 3, we can represent this criteria as:
Further note, from def. 20, if we take:
and from def. 20, we take:
Then, when we write def. 18, eq. 31 and eq. 32 as:
the choice function (which we’ll later define on pg. , thm. 5) should immediately choose
when:
- (1)
-
For all
when defining the set of all values of the
m-th coordinate of
(i.e.,
—where, unlike cit.[
1, 4], we focus on the domain of
to get "
n" instead of "
"), then when
, we either want:
- (a)
and .
- (b)
and .
- (c)
and .
- (d)
and .
- (2)
If the center of the universe is a chosen point
, where:
then for all
, there exists
, s.t.for all
, when set
is a collection of all the values of the
m-th co-ordinate of
, such that
(again, unlike cit.[
1], we focus on the domain of
to get "
n" instead of "
"), we must get:
where, using absolute value function
and
, when set
is a collection of all the values of the
m-th co-ordinate of
, for
, when we define:
and
criteria (1) is achieved, using eq. 38, when:
such that, for all
:
and criteria (2) is achieved, using eq. 36 and 39, when:
such that, for all
:
where we consider the following:
5.2. Question:
How do we create a choice function which solves the question in sec.
Section 3.4 using
,
,
,
, and
or equations 33, 34, 35, 40 and 42 resp.?
5.3. "Attempt" to answer the Question
(Note the attempt might be wrong but could offer hints to how the solution would appear).
Suppose
and the chosen coordinate for the center of the universe (i.e., eq.
35) is the origin, where
for all
:
Using equations
,
,
,
, and
(i.e., eq. 33, 34, 35, 40 and 42) with the absolute value function
and the nearest integer function
, we define:
where using
, the choice function should be the following:
Theorem 5.
where for , we define to be the same as when swapping "" with "" (for eq. 34& 35) and sets with (for eq. 33–45), then for constant and variable , if:
then for all (5.1, crit. 3), if:
we choose satisfying eq. 47. (Note, we want , , and to answer the main question of 3.4) where the answer to the focus3 is in eq. 48—using def. 9 (when it exists):
Note 4 (Explanation of Theorem 5).
The theorem 5 is similar to the methods used in def. 20 crit. 0a and 0b— and —and def. 20 crit. 1 and crit. 3—linear/superlinear convergence—where:
such that we replace:
note the changes to def. 20, crit. 1 were made, so is "large enough" compared to , with non-equivalent to (e.g., when , should be and never give which increases at a smaller rate than that of "small" , e.g.:
or smaller than that of "large" ; e.g.,
Moreover, in and of thm. 5, we add constant and variable so if either
- (1)
(i.e., using a related limit to eq. 47, division by zero is undefined).
- (2)
(i.e., using a related limit to eq. 47, division by zero is undefined).
- (3)
(i.e., similar to of eq. 46, with no variable such that and , where we apply a related limit to eq. 47 that’s undefined due to division by infinity.)
- (4)
-
(i.e., similar to of eq. 46, with no variable and , where we apply a related limit to eq. 47 that’s undefined since
is an undefined empty set.)
- (5)
(i.e., similar to of eq. 45, with no variable and , where we apply a related limit to eq. 47 that’s undefined due to division by infinity.)
- (6)
-
(i.e., similar to of eq. 46, with no variable and , where we apply a related limit to eq. 47 that’s undefined since
is an undefined empty set.)
- (7)
(i.e., infinite number succeeding are smaller than original , where such should be eliminated).
the limit in eq. 47 still exists.
5.4. Questions Regarding 3.4, 4 and 5 [Revisited]
- (1)
How do we use mathematica code to illustrate §4 and 8?
- (2)
Is there a more efficient solution to 3.4?
- (3)
If 3.4 should be changed, (see note 3) what else should be 3.4? What is the most efficient solution to the improved version of 3.4?
References
- Krishnan, B. Mean of Unbounded Sets Using Method Similar To Conditional Expectation. ResearchGate. https://www.ime.usp.br/ afisher/ps/Analogues.pdf. [CrossRef]
- C., W. Mathematicians Prove 2D Version of Quantum Gravity Really Works. Quanta Magazine. https://www.quantamagazine.org/mathematicians-prove-2d-version-of-quantum-gravity-really-works-20210617/.
- E., B.; M., E. Integration with Filters. https://arxiv.org/pdf/2004.09103.pdf.
- Ott, W.; Yorke, J.A. Prevelance. Bulletin of the American Mathematical Society 2005, 42, 263–290. https://www.ams.org/journals/bull/2005-42-03/S0273-0979-05-01060-8/S0273-0979-05-01060-8.pdf.
- John, R. Outlier. https://en.m.wikipedia.org/wiki/Outlier.
- Emily. How do computers draw function graphs? Mathematics Stack Exchange. https://math.stackex-change.com/q/634338.
- M., G. 2 ed.; Springer New York: New York [America];, 2011; pp. 61–95. https://ee.stanford.edu/~gray/it.pdf, doi:https://doi.org/10.1007/978-1-4419-7970-4. [CrossRef]
- Mathe. Mean of a function in Rn. Matchmaticians, [https://matchmaticians.com/storage/answer/101942/ matchmaticians-7gatrd-file-1.pdf]. https://matchmaticians.com/storage/answer/101942/matchmaticians-7gatrd-file-1.pdf.
- B., B.; A., F. Analogues Of The Lebesgue Density Theorem For Fractal Sets Of Reals And Integers. https://www.ime.usp.br/~afisher/ps/Analogues.pdf. [CrossRef]
- B., B.; A., F. Ratio Geometry, Rigidity And The Scenery Process For Hyperbolic Cantor Sets. https://arxiv.org/pdf/math/9405217.pdf.
- Corrao, G. AN HENSTOCK-KURZWEIL TYPE INTEGRAL ON A MEASURE METRIC SPACE. https://core.ac.uk/download/pdf/53287889.pdf.
- (https://mathoverflow.net/users/87856/arbuja), A. Finding an explicit, bijective function that satisfies the following properties? MathOverflow, [https://mathoverflow.net/q/451445]. https://mathoverflow.net/q/451445.
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If the set (def. 7) is the set of all , with an unique and "meaningful" extension of the expected value—w.r.t the Hausdorff measure—on bounded functions to bounded/unbounded f taking finite values, then should be non-shy subset of
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2 |
If the set (def. 7) is the set of all , with an unique and "meaningful" extension of the expected value—w.r.t the Hausdorff measure—on bounded functions to bounded/unbounded f taking finite values, then should be non-shy subset of
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3 |
If the set (def. 7) is the set of all , with an unique and "meaningful" extension of the expected value—w.r.t the Hausdorff measure—on bounded functions to bounded/unbounded f taking finite values, then should be non-shy subset of
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